▎ 摘　　要

NOVELTY - Additive composition comprises an emulsion solution in which graphene oxide nanoparticles and tungsten disulfide nanoparticles are dispersed in a base oil, zinc dithiophosphate, molybdenum dithiocarbamate and 1-(2,2,6-trimethylcyclohexyl)pentan-1-ol. USE - The additive composition is useful in lubricant oil (claimed). ADVANTAGE - The additive composition: reduces production cost and extends life of the lubricant oil while maintaining wear and friction resistance properties; provides lubricant oil which has excellent dispersion stability and dispersion retention rate; and maintains excellent lubricity even when small amounts of tungsten disulfide are added. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing additive composition, comprising (a) preparing an emulsion solution in which graphene oxide nanoparticles and tungsten disulfide nanoparticles are dispersed in a base oil, (b) adding 1- (2,2,6-trimethylcyclohexyl)pentan-3-ol to the emulsion solution and mixing uniformly and (c) mixing zinc dithiophosphate and molybdenum dithiocarbamate in the emulsion solution.